function pagination($query_string){
    global $posts_per_page, $paged;
    $my_query = new WP_Query($query_string ."&posts_per_page=-1");
    $total_posts = $my_query->post_count;
    if(empty($paged))$paged = 1;
    $prev = $paged - 1;
    $next = $paged + 1;
    $range = 5;  //分页数设置
    $showitems = ($range * 2)+1;
    $pages = ceil($total_posts/$posts_per_page);
    if(1 != $pages){
        echo "<ul class='pagination'>";
        echo ($paged > 2 && $paged+$range+1 > $pages && $showitems < $pages)? "<li><a href='".get_pagenum_link(1)."'><i class='fa fa-angle-double-left' aria-hidden='true'></i></a></li>":"";
        echo ($paged > 1 && $showitems < $pages)? "<li><a href='".get_pagenum_link($prev)."'><i class='fa fa-angle-left' aria-hidden='true'></i></a></li>":"";
        for ($i=1; $i <= $pages; $i++){
            if (1 != $pages &&( !($i >= $paged+$range+1 || $i <= $paged-$range-1) || $pages <= $showitems )){
                echo ($paged == $i)? "<li class='active'><a href='".get_pagenum_link($i)."'>".$i."<span class='sr-only'>(current)</span></a></li>":"<li><a href='".get_pagenum_link($i)."'>".$i."</a></li>";
            }
        }
    echo ($paged < $pages && $showitems < $pages) ? "<li><a href='".get_pagenum_link($next)."'><i class='fa fa-angle-right' aria-hidden='true'></i></a></li>" :"";
    echo ($paged < $pages-1 &&  $paged+$range-1 < $pages && $showitems < $pages) ? "<li><a href='".get_pagenum_link($pages)."'><i class='fa fa-angle-double-right' aria-hidden='true'></i></a></li>":"";
    echo "</ul>";
    }
}

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